High Precision Wireless Trackball Mouse White

Features:
The mouse provides two ways to connect-via BT or the included USB receiver, it provides a powerful, reliable signal from up to 10m away.
The mouse has been designed and developed to ergonomically fit the shape of your hand. And with no need to move your arm around to move the cursor, effectively reduce fatigue in your hand and arm.
Your thumb will glide across the smooth ball surface with total ease thanks to transparent surface coating. The high-performance optical sensor matches great accuracy with ultra-low power consumption.
ERGO M575 features a super compact footprint since it doesn't move to control the cursor. It's ideal for tight workspaces, or for those of us that have desks full of papers, personal items.
If you need to clean your trackball, just remove and wipe down the ball, easy to clean.
Connect to either Windows or MacOS, never worry about drop-offs or laggy connections.
Specification:
Brand: Logitech
Model: ERGO M575
Color: Black/White(optional)
Connection type: 2.4GHz wireless technology/BT low power technology
Wireless range: 10m
Key number: 5
Sensor rated resolution: 400dpi
Battery: 1*AA battery(not included)
System requirement: Windows 7 or later, MacOS 10.13 or later
Item size: 13.4 * 10 * 4.8cm /5.28 * 3.94 * 1.89in
Item weight: Approx. 155g /5.47oz
Packing list:
1 * Mouse
1 * USB receiver
1 * User manual